130 Bibliographical Notices. 
6. L. Msingert, n. sp., pp. 9, 16, figs. 22, 25. 
7. L. Hichwaldi, n. sp., pp. 9, 12, figs. 19-21. 
8. L. wiluiensis, n. sp., pp- 10, 17, figs. 27-28 a. 
9. L. parallela, n. sp., p. 18, figs. 24-26. 
10. L. marginata, Keyserling, pp. 10, 19, figs. 29-31. 
Ll. ZL. Keyserlingi, n. sp., pp. 10, 20, figs. 32-34. 
12. Lsochilina biensis, Grunewald, pp. 10, 21, fig. 35. 
13. I. punctata, Eichwald, pp. 10, 22, figs. 36, 37. 
14, I. Maakii, n. sp., pp. 10, 23, figs. 38, 39. 
In the Supplement which the author now gives us he first refers 
to the letter “On some Silurian Leperditie” in the Ann. & Mag. 
Nat. Hist., March 1882, containing some critical remarks by him- 
self on the Leperditie deseribed and figured by T. Rupert Jones in 
the Ann. & Mag. Nat. Hist. of November 1881; and he imtimates 
that with the continued study of the Russian Leperditie he has 
modified some of his views about the species and varieties then re- 
ferred to. In this Supplement M. Schmidt first revises the Silurian 
species from the East-Baltic districts, and then treats of the East- 
Russian Leperditie—L. marginata, Keyserling, and L. wiluiensis, 
Schmidt, both of which he more fully describes from new material. 
He also notices the Uralian LZ. Barbotana, Schm., a new Uralian 
variety of Z. grandis, Schrenck, and a new species and variety from 
the Upper-Silurian or Hercynian stage of the South Ural; and from 
probably the same horizon in the Waigatsch Island he describes 
three new species and a variety, collected during Baron Norden- 
skj6ld’s Jenissei Expedition. 
To show the results of M. F. Schmidt’s late researches, it may be 
best to extract his corrected synonymy of the species he has now 
taken in hand. Thus :— 
P. 8. Leperditia grandis, Schrenck, 1873, in Schmidt’s Russ, sil. 
Lep. p. 10, figs. 3-6; Kolmodin, 1879, Ostrac. sil. Gotl. 
p. 185; F. Schmidt and T. R. Jones, 1882, Ann. & Mag. Nat. 
Hist. March, p. 169. 
Baltic Provinces ; Gothland ; North-German Drift. 
P. 9. Leperditia phaseolus (Hisinger). 
Cytherina phaseolus, His., 1837, Leth. Suec. p. 9, pl. i. fig. 1. ; 
Leperditia Angelini, F. Schmidt, 1873, Russ. sil. Lep. pp. 18-18 (with 
synonyms) ; Lundgren, 1874, ‘Om den vid Ramsisa och Ofveds- 
kloster i Sk&ne forekommande sandstenens Alder,” Lund Univers. 
Arskvift, vol. x. p. 9. : 
Leperditia tyraica, Linnarson, 1875, Anteckning fran en resa i Skanes 
silurtrackter in Geolog. foreningens forh. vol. ii. p. 280. 
Leperditia Angelini, Krause, 1877, Zeitschr. d. deutsch. geol, Ges. 
vol. xxix. p. 29. 
Leperditia phaseolus, Kolmodin, 1879, Ostrac. sil. Gotl. p. 134, pl. xix. 
tigs. 4, 5. 
Daeeradis Hisingert, var. gracilenta, Jones, Ann, & Mag. Nat. Hist. 
November 1881, p. 339, pl. xix. fig. 6. 
